diff --git a/src/rootserver/ob_ddl_service.cpp b/src/rootserver/ob_ddl_service.cpp
index c030b577d2..cc2e98c741 100644
--- a/src/rootserver/ob_ddl_service.cpp
+++ b/src/rootserver/ob_ddl_service.cpp
@@ -6965,6 +6965,7 @@ int ObDDLService::fill_new_column_attributes(
     if (!is_oracle_mode() || alter_column_schema.is_set_default_) {
       new_column_schema.set_cur_default_value(alter_column_schema.get_cur_default_value());
     }
+    new_column_schema.set_zero_fill(alter_column_schema.is_zero_fill());
     new_column_schema.set_is_hidden(alter_column_schema.is_hidden());
     new_column_schema.set_nullable(alter_column_schema.is_nullable());
     new_column_schema.set_autoincrement(alter_column_schema.is_autoincrement());
diff --git a/src/sql/resolver/ddl/ob_alter_table_resolver.cpp b/src/sql/resolver/ddl/ob_alter_table_resolver.cpp
index bceee9a5db..26edf40093 100644
--- a/src/sql/resolver/ddl/ob_alter_table_resolver.cpp
+++ b/src/sql/resolver/ddl/ob_alter_table_resolver.cpp
@@ -4676,6 +4676,10 @@ int ObAlterTableResolver::resolve_change_column(const ParseNode &node)
             && alter_column_schema.get_cur_default_value().is_null()) {
           ret = OB_ERR_PRIMARY_CANT_HAVE_NULL;
           LOG_USER_ERROR(OB_ERR_PRIMARY_CANT_HAVE_NULL);
+        } else if (0 != origin_col_schema->get_rowkey_position()
+            && alter_column_schema.is_set_nullable_) {
+          ret = OB_ERR_PRIMARY_CANT_HAVE_NULL;
+          LOG_WARN("can't set primary key nullable", K(ret));
         } else if (ObGeometryType == origin_col_schema->get_data_type()
                    && origin_col_schema->get_geo_type() != alter_column_schema.get_geo_type()) {
           ret = OB_NOT_SUPPORTED;
@@ -4934,6 +4938,10 @@ int ObAlterTableResolver::resolve_modify_column(const ParseNode &node,
               && alter_column_schema.get_cur_default_value().is_null()) {
             ret = OB_ERR_PRIMARY_CANT_HAVE_NULL;
             LOG_USER_ERROR(OB_ERR_PRIMARY_CANT_HAVE_NULL);
+          } else if (0 != origin_col_schema->get_rowkey_position()
+              && alter_column_schema.is_set_nullable_) {
+            ret = OB_ERR_PRIMARY_CANT_HAVE_NULL;
+            LOG_WARN("can't set primary key nullable", K(ret));
           } else if (ObGeometryType == origin_col_schema->get_data_type()
                      && origin_col_schema->get_geo_type() != alter_column_schema.get_geo_type()) {
             ret = OB_NOT_SUPPORTED;